105427 has 4 divisors (see below), whose sum is σ = 120496. Its totient is φ = 90360.

The previous prime is 105407. The next prime is 105437. The reversal of 105427 is 724501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724501 = 31 ⋅23371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105427 is a prime.

It is a super-2 number, since 2×105427² = 22229704658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7524 + ... + 7537.

It is an arithmetic number, because the mean of its divisors is an integer number (30124).

2¹⁰⁵⁴²⁷ is an apocalyptic number.

105427 is a deficient number, since it is larger than the sum of its proper divisors (15069).

105427 is an equidigital number, since it uses as much as digits as its factorization.

105427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15068.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 105427 is about 324.6952417268. The cubic root of 105427 is about 47.2408042723.

Adding to 105427 its reverse (724501), we get a palindrome (829928).

It can be divided in two parts, 1054 and 27, that added together give a triangular number (1081 = T₄₆).

The spelling of 105427 in words is "one hundred five thousand, four hundred twenty-seven".